Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

34results about How to "Increase screening throughput" patented technology

Apparatus for forming and screening two-dimensional liquid droplet array, and use method thereof

The present invention discloses an apparatus for forming and screening a large-scale single-layer two-dimensional liquid droplet array, and a use method thereof. The apparatus comprises a micro-column array chip, a scraping plate for auxiliary spreading of a liquid droplet, a probe for controlling the liquid droplet, a three-dimensional translation table and other components, wherein a micro groove unit for trapping the single liquid droplet is formed by using the gap between micro-columns, and the liquid droplet is spread in the micro groove unit in a single-layer and single manner through gravity effect and capillary effect or through an auxiliary means so as to form the single-layer liquid droplet array. With the apparatus of the present invention, the accurate positioning and detection on the liquid droplet, the sucking on the target liquid droplet and the subsequent treatments can be performed. According to the present invention, the apparatus has characteristics of simple structure and easy operation; and the method has advantages of fast liquid droplet spreading, high flux, high liquid droplet trapping efficiency, liquid droplet position fixing and the like, and is suitable for single cell analysis and screening, single molecule analysis and screening, high-throughput gene screening, protein directed evolution, antibody screening, microbial research, drug screening, and other fields.
Owner:ZHEJIANG UNIV

Method of establishing animal paternity identification system on basis of whole genome STR

The invention relates to the field of genetic resource conservation, particularly relates to the field of animal paternity identification, and discloses a method of establishing an animal paternity identification system on basis of whole genome STR. The method comprises the following steps: 1) looking up whole genome STR loci; 2) preliminarily screening the STR loci; 3) carrying out a primer design; 4) randomly sampling animal populations and extracting genome DNA; 5) verifying the population diversity of the STR loci; 6) carrying out Hardy-Weinberg equilibrium inspection on the STR loci with genetic polymorphism, and screening out the STR loci with the genotype frequency distribution which meets the Hardy-Weinberg equilibrium; 7) evaluating the forensic medicine application value of the STR loci; 8) establishing the STP animal paternity identification system. The method is convenient to operate; the constructed paternity identification system has a paternity exclusion probability of more than 0.99, and is capable of accurately carrying out animal paternity identification, therefore, the paternity identification system can be used for guiding the breeding of rare species, and the identification and breeding of economic species.
Owner:BGI FORENSIC TECH (SHENZHEN) CO LTD

Antibody library of bacteriophages and applications in immunoassay of pesticide residue

The invention relates to a phage antibody library which assembles an ScFv gene fragment between Restriction Enzyme cutting sites of SfiI and NotI of a pCANTAB5E carrier. The phage antibody library is characterized in that the ScFv gene fragment can be affinitive and enriched with antigens of 16-membered macrolide agricultural chemicals to form a soluble single-chain antibody and the phage antibody library is applied to immunoassay of pesticide residue. The phage antibody library has the advantages that the antibody with high affinity can be obtained without animal immunization, the test period is short, the antibody library is the phage antibody library which takes small molecular milbemycin oxime of a 16-membered macrolide generic structure as immunogen to construct, the antibody library theoretically can directly obtain a specific antibody library of 16-membered macrolide compound through screening, the screening flux is high, the efficiency is high, the specificity is strong, and the affinity selecting range is wide, so that the phage antibody library has wide application prospect in the aspects such as agricultural chemical antibody preparation, testing technique development and the like.
Owner:JIANGSU ACADEMY OF AGRICULTURAL SCIENCES

Paper base micro-fluidic chip for selecting soil active bacterium and components and application of paper base micro-fluidic chip

The invention discloses a paper base micro-fluidic chip for selecting soil active bacterium and components and application of the paper base micro-fluidic chip. A plurality of micro-fluidic units, and units, such as carbon paste three-electrode arrays for bacterial respiration electrochemical measurement are printed on paper to form two types of array dual paper base micro-chamber co-culture and activity screening function units, on chromatographic paper, a carbon paste electrode, a PDMS (Polydimethylsiloxane) passage, a PDMS micro-culture room and the like are sequentially overprinted through silk-screen printing, and furthermore, a model bacterial array unit is printed in an aseptic condition; a dual micro-chamber co-culture array unit of a sample bacterium-model bacterium and a secondary metabolite of a sample bacterium are used to inhibit adjacent model bacterium respiratory chains, and a carbon paste three-electrode printed together with a dual micro-chamber is used to find the position of some active sample bacterial colony; the secondary metabolite of the active sample bacterium is separated through paper base two-dimensional electrophoresis, and an array carbon paste three-electrode is used to find the positions of active components obtained through two-dimensional electrophoresis. The paper base micro-fluidic chip for selecting soil active bacterium is suitable for selecting the active bacterium and active complex components in multiple fields.
Owner:XI AN JIAOTONG UNIV

High-yield coenzyme Q10 rhodobacter sphaeroides and mutation breeding and application thereof

The invention provides high-yield coenzyme Q10 rhodobacter sphaeroides and mutation breeding and application thereof, and relates to the field of microbial mutation breeding. Strains screened by spacemutagenesis are used as starting bacteria and subjected to plasma mutagenesis at normal pressure and room temperature. The high-yield coenzyme Q10 rhodobacter sphaeroides are obtained after multi-resistance screening, high-throughput screening and step-by-step amplification verification, and are deposited in China General Microbiological Culture Collection Center with the deposit number of CGMCCNo. 16625. The average titer of a mutant strain of the rhodobacter sphaeroides can reach 2694[mu] / mL according to 20m<3> fermentation production verification, and the yield of the coenzyme Q10 is significantly improved. In addition, the strain has quadruple resistance and broad application prospects.
Owner:SHENZHOU BIOLOGY & TECH CO LTD +1

Multi-channel droplet quantitative measuring device and measuring method based on pressure driving

The invention discloses a multi-channel droplet quantitative measuring device based on pressure driving. The multi-channel droplet quantitative measuring device comprises a sample application probe for performing sample application operation on a sample solution, a working medium liquid storage tank for containing a working medium, a pressure control system for controlling the pressure in the working medium liquid storage tank, and a fluid damper provided with a micro-channel structure and having a damping effect on fluid in the micro-channel structure, wherein the liquid inlet end of the fluid damper communicates with the medium liquid storage tank, and the liquid outlet end of the fluid damper communicates with the liquid inlet end of the sample application probe in a sealed mode. The liquid droplet quantitative measuring device has the liquid droplet quantitative measuring capacity from picoliter level to microliter level and the liquid droplet quantitative measuring precision as low as picoliter level. According to the multi-channel droplet quantitative measuring device, various solutions with different viscosities can be measured in parallel, and the capability is an essentialcapability for large-scale high-throughput screening applications such as drug screening, protein crystallization condition screening and the like which need to treat a large amount of solutions withdifferent properties. The device is easy to construct, convenient to operate and good in reliability.
Owner:ZHEJIANG UNIV

Influenza A virus medicament screening yeast two-hybrid system and application thereof

The invention is suitable for the technical field of genetic engineering, and provides a target specific influenza A virus medicament screening yeast two-hybrid system and application thereof. The target specific influenza A virus medicament screening yeast two-hybrid system comprises an influenza A virus PB1gene and an influenza A virus gene, a PB1 gene and a PA gene, and PB1, PB2 and PA genes. The target specific influenza A virus medicament screening yeast two-hybrid system for medicament screening has the advantages of high specificity, high throughput screening and exact mechanism of a target medicament.
Owner:SHENZHEN CENT FOR DISEASE CONTROL & PREVENTION

Method for analyzing epitope of protein

InactiveCN102021242AGood simulation space conformationIncreased Accuracy and Screening ThroughputMicrobiological testing/measurementVector-based foreign material introductionProtein targetC-terminus
The invention discloses a method for analyzing epitope of a protein, comprising the following steps of: (1) constructing a deoxyribonucleic acid (DNA) library of a target protein; inserting the DNA segment of the coding gene of the protein into a T carrier, wherein the T carrier contains the coding gene of yeast a lectin Aga2p; fusing a peptide coded by the DNA segment with the C end of the yeast a lectin Aga2p; (2) displaying the DNA library on yeast surfaces to obtain a yeast display library; (3) separating out yeasts combined with the antibody of the target protein; and (4) extracting plasmid sequencing and analyzing the epitope of the protein. The invention has the advantages that (1) yeast cells have multiple modification paths on the protein, can conveniently display the complicated high molecular weight protein and better simulates a space conformation; (2) the yeasts can be screened one by one by adopting flow cytometry (FACS) so as to improve the accuracy and the screening flux; (3) the yeasts can independently complete the self growth reproduction process, the operation is simple and convenient and the interference factors are few; and (4) the yeasts are not easy to propagate in the air or generate cross infection.
Owner:TSINGHUA UNIV

Cell elution method based on drug target residence time

The invention relates to a cell elution method based on drug target residence time. The method is characterized in that to-be-detected compounds are fully incubated with cells with drug targets expressed, the to-be-detected compounds dissociated from the drug targets are continuously removed by repeating the steps of elution, incubation and centrifugation three times, efficacy of the compounds notdissociated from the drug targets after elution is then detected by using a cell function experiment, an obtained result is compared with produced efficacy of to-be-detected compounds with the same concentration after full incubation with cells with drug targets expressed without elution, incubation and centrifugation, and residence time of the detected compounds is analyzed. The cell elution experiment method has the characteristics of being pollution-free, high in flux, simple to operate and the like.
Owner:XUZHOU MEDICAL UNIV

Application of high-throughput screening method using droplet micro-fluidic chip in actinomycetes

The invention discloses an application of a high-throughput screening method using a droplet micro-fluidic chip in actinomycetes, actinomycete monospores can be embedded in a single droplet through the method, the single spores are stably formed in the droplet within the culture time of 0-7 days, the wide detection and sorting time is guaranteed, and in the aspect of detection, by using the method, functional promoters in actinomycetes can be detected at high throughput, or the strength of some unknown promoters can be identified, and promoter elements with proper strength can be screened for subsequent actinomycete strain modification; in the aspect of screening, the screening flux of the method can reach 105 strains per day, a mixed library of positive bacteria generating green fluorescence signals and negative bacteria not generating green fluorescence signals can be successfully sorted, and the enrichment rate of the sorted positive bacteria reaches 81.7% or above and is increased to 26 times compared with 3.1% before sorting.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Genetic screening method for negative regulatory factor of streptomyces biosynthesis gene cluster

The invention provides a screening method for a negative regulatory factor of a novel biosynthesis gene cluster of streptomyces. The screening method comprises the following steps: constructing a promoter-mediated reporting system of genes of self-interest in a streptomyces cell, then using a random mutation system based on a transposon Himar1 to mutate the streptomyces with the reporting system,intensively screening a mutant streptomyces strain to obtain a streptomyces strain with high expression of target genes, performing bacteriophage packaging on genomes of the streptomyces strain with high expression of target genes and screening out cosmids with randomly inserted fragments, sequencing DNA of the cosmids to determine the location of the randomly inserted fragments in the genomes ofthe streptomyces strain with high expression of target genes. The screening method, provided by the invention, is stable in screening environment, high in screening flux, low in false positive, high in efficiency, accurate and convenient to operate, and can be widely used in the field of high-yield screening and transformation of industrial streptomyces metabolites, and the screened and transformed streptomyces metabolites are high in yield, good in genetic stability and suitable for industrial production.
Owner:ZHEJIANG UNIV

Saccharopolyspora spinosa DS190375 as well as fermentation product, microbial inoculum, fermentation and screening method and application thereof

The invention relates to the technical field of microorganisms, and particularly discloses saccharopolyspora spinosa DS190375 as well as a fermentation product, a microbial inoculum, a fermentation and screening method and an application of saccharopolyspora spinosa DS190375. The preservation number of the saccharopolyspora spinosa DS190375 disclosed by the invention is CGMCC No. 18681. The fermentation method comprises the following steps: rejuvenating and screening the strain in a high-salt plate culture medium, and fermenting. The invention also provides a screening method of the saccharopolyspora spinosa with high spinosad yield, which comprises the following steps: screening to obtain the saccharopolyspora spinosa with high salt tolerance, and screening the obtained saccharopolysporaspinosa with high salt tolerance to obtain the strain with high spinosad yield. The saccharopolyspora spinosa DS190375 disclosed by the invention is resistant to high salt and high in spinosad yield.The fermentation method avoids the problem of unstable spinosad yield caused by strain performance degradation.
Owner:NEW FOUNDER HLDG DEV LLC +2

High-yielding penicillin strain as well as screening method and application thereof

The invention discloses a high-yielding penicillin strain, a screening method of the strain, and application of the strain in penicillin production, and belongs to the technical field of antibiotics production and application. The strain is characterized in that penicillin fermenting unit is increased by 13.2%, so that the yield of penicillin is effectively increased, and the production cost is decreased. The screening method comprises the following steps: (A) preparing a protoplast; (B) performing high-energy electronic mutagenesis; (C) rationally screening; and (D) screening with a shake bottle. The penicillin strain screening method is high in purposiveness, and high in mutation probability.
Owner:NORTH CHINA PHARMA COMPANY

Cell sorting device

The invention provides a cell sorting device. The cell sorting device comprises a shell and a screening chip; the shell is internally provided with an inlet, a fluid passage and a first outlet, and the inlet and the first outlet are communicated with the fluid passage separately; the screening chip is arranged at the first outlet and comprises a screening area and a packaging area, the packaging area is located at the outer side of the screening area and used for being connected with the shell, a plurality of through holes are formed in the screening area, the screening area is made of a silicon material, and the thickness of the screening area is less than 25 micrometers. By means of the technical scheme, the problems of low throughput, complicated operation and easy breakage of cells inthe prior art can be solved.
Owner:INST OF MICROELECTRONICS CHINESE ACAD OF SCI

A rapid screening method for the in vitro inhibitory effect of nine human liver cyp450 enzymes

The invention discloses a rapid screening method for comprehensively evaluating the in vitro inhibitory effects of 9 human liver CYP450 metabolic enzymes by using 14 kinds of probe substrates and 16 kinds of probe reactions. The invention mainly relates to monitoring the metabolic activity changes of 9 kinds of human liver CYP450 enzymes by using an in vitro mixed probe incubation method combined with LC / MS / MS, and rapidly and comprehensively evaluating the inhibitory effect of test compounds on metabolic enzymes. This method comprehensively considers the specificity and diversity of probe substrates, the interaction between probe substrates, and the reaction of different incubation conditions (organic solvent, buffer, BSA, etc.) in the incubation system to the probe reaction. The influence of various factors such as the influence on the activity of the enzyme, and the enzyme kinetics characteristics of the 16 probe reactions under the selected incubation conditions, combined with the high sensitivity and high selectivity LC-MS / MS technology, established a new in vitro evaluation System, in order to more accurately and comprehensively predict the possible inhibitory effects of test compounds on 9 major metabolic enzymes of human liver in the high-throughput screening of new drug development, and improve the predictability of later metabolic interactions.
Owner:CHINA PHARM UNIV

Method for acquiring concentration of antibiotics to restrain or kill target microorganisms

InactiveCN104878073AAccurately judge the strength of antibacterial effectRapid Screening StudiesBioreactor/fermenter combinationsBiological substance pretreatmentsMicroorganismAntibiotic Y
The invention provides a method for acquiring concentration of to-be-measured antibiotics to restrain or kill target microorganisms. The method comprises the following steps: B1, covering a solid medium with a microchip, wherein the microchip is a film made of polydimethylsiloxane; B2, after the B1 is completed, adding liquid phases of to-be-measured antibiotics with the same volume and different concentrations in different through holes, and airing; B3, after the B2 is completed, adding the liquid phases containing the target microorganisms in the through holes, and culturing and observing the growth situation of the microorganisms so as to acquire the concentration of to-be-measured antibiotics to restrain or kill target microorganisms. The method has a very broad application prospect in evaluating the effect of the to-be-measured antibiotics to the target microorganisms or the study of screening antibiotics having an effect on the target microorganisms.
Owner:SUZHOU GENOARRAY CO LTD

Curved screen adjustable feeding system

The invention discloses a curved screen adjustable feeding system, and relates to the technical field of filtration treatment of wastewater. The curved screen adjustable feeding system comprises a pulp feeding pipe and a feeding device, wherein the width of a discharging hole of the feeding device is same as that of a screen plate of a curved screen; the discharging amount and the pressure of thedischarging hole are adjustable, and a water curtain of the discharging hole can be uniformly distributed on the screen plate of the curved screen, so that the utilization ratio of the screen plate ismaximized; meanwhile, pressure-type pulp feeding is realized, the screening capacity of equipment is obviously increased, and therefore, the screening efficiency of the equipment is effectively improved. In an operation process, according to the requirement of the screening capacity, the opening of the discharging hole is adjusted correspondingly, and the flow rate and pressure of pulp at the discharging hole can be adjusted; in addition, the opening of the discharging hole of the feeding device can be adjusted without stopping the equipment when in operation, so that the feeding system is wide in adjusting range, wide in application range and novel in structure, safe and reliable.
Owner:XINXIANG XINPING AVIATION MACHINERY CO LTD

A method for establishing an animal paternity system based on genome-wide str

The invention relates to the field of genetic resource conservation, particularly relates to the field of animal paternity identification, and discloses a method of establishing an animal paternity identification system on basis of whole genome STR. The method comprises the following steps: 1) looking up whole genome STR loci; 2) preliminarily screening the STR loci; 3) carrying out a primer design; 4) randomly sampling animal populations and extracting genome DNA; 5) verifying the population diversity of the STR loci; 6) carrying out Hardy-Weinberg equilibrium inspection on the STR loci with genetic polymorphism, and screening out the STR loci with the genotype frequency distribution which meets the Hardy-Weinberg equilibrium; 7) evaluating the forensic medicine application value of the STR loci; 8) establishing the STP animal paternity identification system. The method is convenient to operate; the constructed paternity identification system has a paternity exclusion probability of more than 0.99, and is capable of accurately carrying out animal paternity identification, therefore, the paternity identification system can be used for guiding the breeding of rare species, and the identification and breeding of economic species.
Owner:BGI FORENSIC TECH (SHENZHEN) CO LTD

Receptor antagonist long-term effectiveness analysis method

The invention discloses a receptor antagonist long-term effect analysis method, and belongs to the field of receptor antagonist long-term effect analysis methods. Previously, receptor antagonist long-term effectiveness evaluation is mainly confirmed by competitive binding tests of radioactive ligands, but the method has certain limitations, such as washing and filtering, long experimental period and low flux. The method is based on a label-free cell integration pharmacology technology, does not need radioactive labeling, reduces the test difficulty, effectively shortens the test period, and improves the test efficiency. The compounds tiotropium bromide and rafenacin evaluated by the method are both M3 receptor long-acting antagonists, glycopyrronium bromide is an M3 receptor medium-long-acting antagonist, isopropylammonium bromide is an M3 receptor short-acting antagonist, and the result is consistent with the conclusion of a radiolabeling method. The novel method for analyzing the long-acting property of the receptor antagonist has the advantages of reliable detection result, high sensitivity, high screening flux, simplicity and convenience in operation and the like.
Owner:TAIZHOU GUOKEHUAWU BIOMEDICAL TECH CO LTD

3-furyl-2-cyano-2-acrylamide derivative, preparation method therefor, pharmaceutical composition and use thereof

Disclosed are a 3-furyl-2-cyano-2-acrylamide derivative with epidermal growth factor receptor (EGFR) inhibitory activity and pharmaceutical acceptable salt thereof, together with preparation method thereof, pharmaceutical composition comprising the compound, and application of the compound in treating senile dementia (AD). The new compound is shown as formula I, wherein R1 is selected from the group consisting of H, C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl and C3-C6 cycloalkyl; R2 is selected from the group consisting of alkyl, cycloalkyl, alkenyl, alkynyl, aryl, heteroaryl, aralkyl and heteroaralkyl; X is selected from the group consisting of CH2, NH, O and S; m and n are all integers greater than or equal to zero.
Owner:JENKEM TECH

A device for forming and screening two-dimensional droplet arrays and methods of use thereof

The present invention discloses an apparatus for forming and screening a large-scale single-layer two-dimensional liquid droplet array, and a use method thereof. The apparatus comprises a micro-column array chip, a scraping plate for auxiliary spreading of a liquid droplet, a probe for controlling the liquid droplet, a three-dimensional translation table and other components, wherein a micro groove unit for trapping the single liquid droplet is formed by using the gap between micro-columns, and the liquid droplet is spread in the micro groove unit in a single-layer and single manner through gravity effect and capillary effect or through an auxiliary means so as to form the single-layer liquid droplet array. With the apparatus of the present invention, the accurate positioning and detection on the liquid droplet, the sucking on the target liquid droplet and the subsequent treatments can be performed. According to the present invention, the apparatus has characteristics of simple structure and easy operation; and the method has advantages of fast liquid droplet spreading, high flux, high liquid droplet trapping efficiency, liquid droplet position fixing and the like, and is suitable for single cell analysis and screening, single molecule analysis and screening, high-throughput gene screening, protein directed evolution, antibody screening, microbial research, drug screening, and other fields.
Owner:ZHEJIANG UNIV

Pressure-driven multi-channel droplet quantitative measuring device and measuring method

The invention discloses a multi-channel droplet quantitative measuring device based on pressure driving. The multi-channel droplet quantitative measuring device comprises a sample application probe for performing sample application operation on a sample solution, a working medium liquid storage tank for containing a working medium, a pressure control system for controlling the pressure in the working medium liquid storage tank, and a fluid damper provided with a micro-channel structure and having a damping effect on fluid in the micro-channel structure, wherein the liquid inlet end of the fluid damper communicates with the medium liquid storage tank, and the liquid outlet end of the fluid damper communicates with the liquid inlet end of the sample application probe in a sealed mode. The liquid droplet quantitative measuring device has the liquid droplet quantitative measuring capacity from picoliter level to microliter level and the liquid droplet quantitative measuring precision as low as picoliter level. According to the multi-channel droplet quantitative measuring device, various solutions with different viscosities can be measured in parallel, and the capability is an essentialcapability for large-scale high-throughput screening applications such as drug screening, protein crystallization condition screening and the like which need to treat a large amount of solutions withdifferent properties. The device is easy to construct, convenient to operate and good in reliability.
Owner:ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products